How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?
The girders of a suspension bridge form an arc. The definition of an arc is a curve or bowed shape, like a part of a circle. An example of an arc is a rainbow. To arc is defined as to make a curved shape or move in a curved path.
arco m (plural arcos) ( 1 geometry) arc. 2  arc, curve. ( 3 architecture) arch.  bow 1  (weapon) bow (rod used to play stringed instruments) ( dentistry) archwire (orthodontic wire conforming to the alveolar or dental 1  arch) (ophthalmology) arcus (white band of cholesterol that forms at the edge of the cornea)